Disclosures About Fair Value of Assets and Liabilities (Details 2) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 545	$ 1,045
Loans one- to four-family [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 9	$ 593
Valuation Technique(s)	Sales comparison approach	Sales comparison approach
Unobservable Input(s)	Adjustments for differences between comparable sales	Adjustment for differences between comparable sales
Loans one- to four-family [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	(82.20%)	25.30%
Loans one- to four-family [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	151.30%	50.60%
Loans one- to four-family [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	(20.50%)	(0.60%)
Other real estate owned net one- to four-family [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 577	$ 117
Valuation Technique(s)	Sales comparison approach	Sales comparison approach
Unobservable Input(s)	Adjustments for differences between comparable sales	Adjustments for differences between comparable sales
Other real estate owned net one- to four-family [Member] | Minimum [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	(2.70%)	8.60%
Other real estate owned net one- to four-family [Member] | Maximum [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	41.20%	31.00%
Other real estate owned net one- to four-family [Member] | Weighted Average [Member] | Foreclosed and repossessed assets: [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range (Weighted Average)	(17.90%)	(29.00%)